Value Collection R50000028 Hex Lock Nut 5/16-24 Unf

Product Description

The VALUE COLLECTION R50000028 is a 5/16-24 UNF hex lock nut with a nylon insert locking mechanism, manufactured from Grade 2 steel with a zinc-plated finish. The nylon insert creates interference with mating thread flanks to resist vibration-induced loosening without damaging fastener threads. At 17/64 inches high and 1/2 inch across the flats, this nut fits standard hex tooling and is suited for applications where a full-height hex nut would be excessive. Right-hand thread direction follows standard UNF convention. Installers across HVAC, plumbing, electrical, and general mechanical trades use this style of prevailing-torque nut wherever vibration resistance is required.

This nylon insert lock nut is appropriate for light-to-medium fastening applications on 5/16-24 UNF threaded fasteners in residential and commercial installations. Common install scenarios include equipment panel assembly, bracket mounting, and component attachment on HVAC units, electrical enclosures, and plumbing fixtures. The zinc plating provides baseline corrosion resistance for indoor and mildly humid environments. These nuts are sold individually but require a minimum order quantity of 100 units per order.

Key Features

• Nylon insert locking style resists loosening under vibration without thread damage
• Grade 2 steel construction suitable for standard light-to-medium load applications
• Zinc-plated finish provides baseline corrosion resistance
• 5/16-24 UNF right-hand thread for compatibility with standard inch-series fasteners
• Low-profile at 17/64 inches high, conserving axial space in tight assemblies
• 1/2-inch width across flats fits common standard hex sockets and wrenches

Compatibility

Designed for use with 5/16-24 UNF externally threaded fasteners conforming to inch-series unified fine thread standards. Does not meet military fastener specifications.

Installation Notes

Nylon insert lock nuts are single-use fasteners — once the nylon insert has been fully threaded and removed, the locking torque is significantly reduced and the nut should not be reused in critical applications. Use a standard hex socket or open-end wrench sized to 1/2 inch across the flats. Ensure mating threads are clean and free of debris before installation. Follow applicable equipment manufacturer torque guidelines, as no product-specific torque values are provided with this fastener.